Coffee grinder



FIG. 1 is a front perspective view of a coffee grinder showing our new design;

FIG. 2 is a rear perspective view thereof;

FIG. 3 is a top plan view thereof; and

FIG. 4 is a left side elevational view thereof.

The cord is shown broken away in FIGS. 2-4 for ease of illustration. 

The ornamental design for a coffee grinder, as shown. 